From movabletype.org
1. Log in to Movable Type.
2. Select the weblog containing the category you want to TrackBack-enable.
3. Click Categories.
4. Edit the category attributes.
Click the Edit category attributes link for the category that you want to TrackBack-enable.
5. Enable TrackBack pings.
Click the On button under Accept incoming TrackBack pings? to enable incoming TrackBack pings for this category. Then click Save.
6. Add a Ping listing to your template.
To list the 15 most recent pings to this category in one of your templates, add this code to the template:
<MTPings category="TrackBack" lastn="15">
<a href="<$MTPingURL$>"><$MTPingTitle$></a><br />
</MTPings>
In this example, the category name is TrackBack (as we saw above in the editing screenshot). You would need to insert the name of your category instead.
7. Post the TrackBack URL publicly.
In order for others to send TrackBack pings to this category, you'll need to publicly post the TrackBack URL displayed on the edit category screen:
Some examples of sites using TrackBack in this manner:
* Austin Bloggers (
http://www.austinbloggers.org/)
* SXSWTrack (
http://www.sxswblog.com/sxswTrack.blog)
* BlogPopuli (
http://www.blogroots.com/blogpopuli.blog)